Micromod MOD: MODCELL Multiloop Processor 2002N Model C and Associated Hardware - Manual (Page 12)

MODCELL Multiloop Processor
PRODUCT DESCRIPTION
1.4 I/O MODULES
The descriptions included in this section give a brief overview of the functions and
features of the I/O modules.
1.4.1 2001A Voltage Input Module
The voltage input module provides dual ranges of ±10V dc and ±100 mV dc selectable
at configuration time. Input to the module is scaled and then applied to an integrating
analog to digital converter. Line cycle integration can be performed at integrals of either 50
or 60 Hz line frequencies to reject any line frequency noise. Transformer isolation from
the +5 volt supply is used to derive all the internal voltages to run the isolated front end.
Optical isolation is used to transfer the information from the A/D converter serially to the
microprocessor. The microprocessor takes the raw A/D voltage, compares it to the
reference, and then presents it to the host as requested over the serial communications
bus. This module uses the Voltage/Current Input Module (VCIM) Block for configuration of
input parameters.
VCIM
Catalog Number Description for 2001A
BASE NUMBER
2001A Voltage Input Module
UNUSED Z Unused Character
ELECTRICAL CODE 10 General Purpose, standard
6
7
3
4
5
2
1
INPUT RANGE 10 ±100 mV or ±10 Vdc
ISOLATION 1 Isolated
MODEL A 1st Design Level
B 2nd Design Level
Sample Number 2001AZ10101B
6